So many everyday objects seem to be turned into actual sex toys right now. From vibrating teddy bears to pillows.

I haven't used anything for masturbation on myself other than sex toys for around 10 years though. Actual pleasure products and my fingers are far more fun. Yet for teasing a sub I may use something everyday safely, due to their fantasy, and some of the objects objectives are to cause displeasure than pleasure, so something which isn't desinged (like sand paper) is ideal as really a purpose built product should lead to pleasure or at the very least no a displeasent feeling even if it's a let down.